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Message-Id: <20180521210506.440063348@linuxfoundation.org>
Date:   Mon, 21 May 2018 23:11:27 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Maxime Chevallier <maxime.chevallier@...tlin.com>,
        Gregory CLEMENT <gregory.clement@...tlin.com>
Subject: [PATCH 4.16 030/110] ARM64: dts: marvell: armada-cp110: Add mg_core_clk for ethernet node

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Maxime Chevallier <maxime.chevallier@...tlin.com>

commit f43194c1447c9536efb0859c2f3f46f6bf2b9154 upstream.

Marvell PPv2.2 controller present on CP-110 need the extra "mg_core_clk"
clock to avoid system hangs when powering some network interfaces up.

This issue appeared after a recent clock rework on Armada 7K/8K platforms.

This commit adds the new clock and updates the documentation accordingly.

[gregory.clement: use the real first commit to fix and add the cc:stable
flag]
Fixes: e3af9f7c6ece ("RM64: dts: marvell: armada-cp110: Fix clock resources for various node")
Cc: <stable@...r.kernel.org>
Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 Documentation/devicetree/bindings/net/marvell-pp2.txt |    9 +++++----
 arch/arm64/boot/dts/marvell/armada-cp110.dtsi         |    5 +++--
 2 files changed, 8 insertions(+), 6 deletions(-)

--- a/Documentation/devicetree/bindings/net/marvell-pp2.txt
+++ b/Documentation/devicetree/bindings/net/marvell-pp2.txt
@@ -21,9 +21,10 @@ Required properties:
 	- main controller clock (for both armada-375-pp2 and armada-7k-pp2)
 	- GOP clock (for both armada-375-pp2 and armada-7k-pp2)
 	- MG clock (only for armada-7k-pp2)
+	- MG Core clock (only for armada-7k-pp2)
 	- AXI clock (only for armada-7k-pp2)
-- clock-names: names of used clocks, must be "pp_clk", "gop_clk", "mg_clk"
-  and "axi_clk" (the 2 latter only for armada-7k-pp2).
+- clock-names: names of used clocks, must be "pp_clk", "gop_clk", "mg_clk",
+  "mg_core_clk" and "axi_clk" (the 3 latter only for armada-7k-pp2).
 
 The ethernet ports are represented by subnodes. At least one port is
 required.
@@ -80,8 +81,8 @@ cpm_ethernet: ethernet@0 {
 	compatible = "marvell,armada-7k-pp22";
 	reg = <0x0 0x100000>, <0x129000 0xb000>;
 	clocks = <&cpm_syscon0 1 3>, <&cpm_syscon0 1 9>,
-		 <&cpm_syscon0 1 5>, <&cpm_syscon0 1 18>;
-	clock-names = "pp_clk", "gop_clk", "gp_clk", "axi_clk";
+		 <&cpm_syscon0 1 5>, <&cpm_syscon0 1 6>, <&cpm_syscon0 1 18>;
+	clock-names = "pp_clk", "gop_clk", "mg_clk", "mg_core_clk", "axi_clk";
 
 	eth0: eth0 {
 		interrupts = <ICU_GRP_NSR 39 IRQ_TYPE_LEVEL_HIGH>,
--- a/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-cp110.dtsi
@@ -40,9 +40,10 @@
 			compatible = "marvell,armada-7k-pp22";
 			reg = <0x0 0x100000>, <0x129000 0xb000>;
 			clocks = <&CP110_LABEL(clk) 1 3>, <&CP110_LABEL(clk) 1 9>,
-				 <&CP110_LABEL(clk) 1 5>, <&CP110_LABEL(clk) 1 18>;
+				 <&CP110_LABEL(clk) 1 5>, <&CP110_LABEL(clk) 1 6>,
+				 <&CP110_LABEL(clk) 1 18>;
 			clock-names = "pp_clk", "gop_clk",
-				      "mg_clk", "axi_clk";
+				      "mg_clk", "mg_core_clk", "axi_clk";
 			marvell,system-controller = <&CP110_LABEL(syscon0)>;
 			status = "disabled";
 			dma-coherent;


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